So if radio silence is your goal, you can create an electromagnet by running the current from your car's electrical system through a tire iron wrapped with copper speaker wiring.
Jadijikakeheninganradio adalahtujuanAnda, Andadapatmembuatelektromagnet denganmenjalankanarusdari sistemlistrikmobilAnda melaluibanbesidibungkus denganspeakertembagakabel.